Networks sell advertising time based principally on...

Networks sell advertising time based principally on their performance among key demographic groups, which vary based on the time of day. Ratings performance in these categories gives a rough indication of network revenues in that day part, though profitability can vary based on programming costs and other factors.

Prime Time

Ratings for adults, 18-49

NBC

Last week: 7.7%

*

ABC

Last week: 5.4%

*

CBS

Last week: 4.7%

*

Fox

Last week: 4.6%

*

UPN

Last week: 1.8%

*

WB

Last week: 1.5%

Size of group: 123,490,000

Data are for week of Sept. 22, the start of the fail television season.

Early Morning

Ratings for adults 25-54

Network: NBC (Today)

This week: 2.4

Season to date: --

*

Network: ABC (Good Morning)

This week: 1.7

Season to date: --

*

Network: CBS (This Morning)

This week: 1.1

Season to date: --

Size of group: 115,950,000

Daytime

Ratings for women 18-49

Network: ABC

This week: 2.9

Season to date: --

*

Network: CBS

This week: 2.7

Season to date: --

*

Network: NBC

This week: 2.2

Season to date: --

Size of group: 62,55,000

Late Night

Ratings for adults 18-49

Network: NBC (Leno)

This week: 2.9

Season to date: --

*

Network: CBS (Letterman)

This week: 2.0

Season to date: --

*

Network: ABC (Nightline/Politically Incorrect)

This week: 1.4

Season to date: --

Size of group: 123,490,000

Saturday Morning

Ratings for children 2-11

Network: Fox

This week: 3.9

Season to date: --

*

Network: ABC

This week: 3.2

Season to date: --

*

Network: WB

This week: 2.0

Season to date: --

*

Network: CBS

This week: 0.8

Season to date: --

Size of group: 39,190,000

Sources: Nielsen Media Research, networks

*

Note: Each rating point equals 1% of group